If Xantcha can't attack for any reason (such as being tapped or having come under that player's control that turn), then it doesn't attack
Between three and six will be Uncommon, while the rest will be Common and a land card
Sure, 10 mana is a lot to be paying outside of EDH, but 10 mana for 20 power will always be worth it, especially when those tokens are knight-type and get the bonuses from the rest of your knight lords
This means that you should protect your cards from wear and tear as much as possible
On Trainer cards it will always be found in the very bottom left hand corner of the card and for Energy cards it will always be in the top right hand corner, next to the word Energy
Unlike those past releases, each deck will also contain 10 oversized Planechase cards - five new and five reprints - that will allow players to experience Planechase right out of the box